Six-wheel truck



Oct. 23, 1928.

C. B. HARBISON SIX-WHEEL TRUCK s sheets-Shet 1 Filed July 25, 1927 v c.B. HARBlsoN Oct. 23, 1928.

SIX-WHEEL TRUCK F 1ed July 25, 1927 5 Sheets-Sheet 2 @bm NU Nm, @W NWNm,

Oct. 23, 1928.

c. B. HARBISON S IX-WHEEL TRUCK Filed July 25, 1927 5 SheetS-Sheei .mlm

Patented @et 23, 1.923.

CLARENCE B. HARBSON, OF LIMA, OHIO, ASSIGNOR TO THE OHIO STEEL FOUIDRY`COMPANY, OF LIMA, 01110, A CORPORATION QF OHIO.

SIX-WHEEL TRUCK.

Appiieatin inea July 25,

This invention relates to improvements in railway truck equalizers, andmore particu- -larly to equalizers for six-wheel trucks, and ,has forits principal object to provide an improved construction and.arrangement of spring equalizing devices whereby a plurality of leafsprings of uniform size are provided, and which may be readily appliedor removed from the truck.

The invention may best be understood by reference to the accompanyingdrawings, in which i Figure 1 isa side view of a truck, with partsbroken away to show the arrangement of the spring equalizing devices.

Figure?J is a fragmentary plan view showing one side of the'truclr,

Figure 3 is an enlarged en line 3-3 of Figure 1,

Figure 4 is an enlarged detail section taken on line 4 4 of Figure 1,

Figure 5 is a diagram showing the arrangement of springs and equalizerbars, and

Figures 6 and 7 are detail side and end views of the spring saddle pins.

Referring to details of the embodiment of the invention shown he-rein,the main truck body 10 is formed of a single casting, including sideframe members 11, 11, three depending journal box pedestals 12, 12, 12,and connecting suitable cross frame members 13,` 13. Three wheel axles14,14, 14, have journal boxes disposed as usual in the pedestals 12` 12,12, the journal boxes, for clarity of illustration, being omitted in thedrawings. i

The frame members 11, 11, at each sideof the truck are preferably formedin hollow or box like cross-section throughout the length of the truck,having upper and lower transverse webs 16 and 17, and inner and out-erside walls 18 and 19, respectively, as best shown in Figure 4. Theequalizing devices of the truck are disposed within these hollowsections, the devices on the two sides being similar, soa description 0fone set will sufiice for an understanding of both. Y

An equalizer bar 20 extends from the central journal box bearing saddle21 to one of the end journal box saddles, as for instance the left handsaddle 22, and a similar equalizer bar 23 extends to the other journalsaddle 24. As shown, in, Figure 2, the inner end of equalizer bar 2Ocomprises a single arm 20a fitting between two arms 23a, .2r a of thecompanion equalizer bar 23 so as to provide beardetail section taken1927. Serial No. 208,140.

ing for both bars on saddle 21, but in other respects the twoequalizerbars and their associated parts may be similar. extendssomewhat beyond the saddle of its respective journal box, and isgenerally U-shaped in cross section, as shown in Figure 3, excepting atits central portion, where a cross member 27 connects t-lie two sidewalls 28, 28, together,as shown in Figure 4. y

Referring now to equalizer bar 20, the same is provided with twosprings30 and 31, placed in alignment within the bar, with their re-' spe-ctivecenters 32 and 33 in supporting en` distance from the center wheel axisD to the j' In the form axis E of the outer wheel. shown, the springseat 32 of outer spring 30` is disposed substantially in line with andabove the outer journal box, so that in order to maintain theproportions above mentioned, the seat 33 of inner spring 31 is disposedsubstantially 2/3 the distance from the axis of the outer axle to theaxis of the center axle.

With the construction above described, a six wheel truck may beprovided' with eight leaf springs, as againstsix springs usuallyprovided for va similar purpose. These springs are of uniform size so asto be interchangeable for ready replacement or repair.

Furthermore, they may be readily installed or removed, together with theequalizer bar, by withdrawing them endwise through ings 36, 36, atopposite ends of the hollow frame members 11, 11, without making itnecessary to remove the truck from beneath the car.

Although I have shown and described certain embodiments of myinvent-ion. it will be understood that I do not wish to be. limited tothe exact construction illustrated and described, but that variouschanges and modi-i fications may be made without departing from thespirit and scope of the invention.

I'claiin:Y l

. 1. A car truck having side frame members` three wheel axles, ournalboxes for said axles an equalizer bar extending from each center Each ofthem f journal box to the two adjacent end boxes, and two leaf springsinterposed bet-Ween each equalizer bar and its respective side .framemember,said springs being arranged with the center between them disposedsubstantially two-thirds the distance from the center box to said endjournal box.

2. A car truck having hollow side frame members open at the endsthereof, three wheel axles, journal boxes for said axles, an equalizerbar extending from each center ournal box to the two adjacent end boxes,and t-wo leaf springs interposed between each equal izer bar and itsrespective side frame member, said'springs bein arranged with the centerbetween them sposed substantially two-thirds the distance from thecenter box to said end journal box.

3. A car truck having side frame members, three wheel axles, journalboxes for said axles, an equalizer bar generally U-shaped in crosssection and extending from each center journal box to the two adjacentend boxes, and two leaf springs disposed between the side walls of eachbar and interposed between said bar and its respective side framemember, said springs being arrangedA with the center between themdisposed substantially two-thirds the distance from the center box tosaid end journal box.

4. A car truck having side frame members.

Y three wheel axles, journal boxes for said axles, an equalizer barextending from each Y center journal box and beyond the two ad- `acentend boxes, and two similar leaf springs lnterposed4 between eachequalizer bar and its respective side trame member, one of said springshaving its center disposed substantially over the axis of its endjournal box, and the other spring having its center disposedsubstantially onethird the distance from the center box to said endournal box.

5. A car truck having side frame inembers, three wheel axles, journalboxes for said axles, an equalizer bar extending from each centerjournal box to the two adjacent end boxes, and two similar leaf springsinterposed between each equalizer bar and its respective side framemember, said springs having their centers engaging said side frame, andwith the center between them disposed substantially two-thirds thedistance from the center box to said end journal box.

6. A car truck havingr hollow side frame members open at the endsthereof, three wheel axles, journal boxes for said axles, an equalizerbar extending from each center journal box and beyond the adjacentV endboxes, and two similar leaf springs interposed between each equalizerbar and its respective side frame member, one of said springs having itscenter engaging said side frame substantially over the axis of its endjournal box, and the other spring having its center engaging said sideframe substantially one-third the distance from the center box to saidend journal box, said springs and bars being removable longitudinally atopposite ends of said hollow `traine member.

Signed at Lima, Ohio, this 6th day of July, 1927.

CLARENCE B. HARBISON.

